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New observations are reported of atmospheric Li abundances for six extremely metal-poor dwarfs with Fe-H ratios not higher than -2.59 and T(e) not lower than 5950 K. The spectra were obtained in 1990 at Kitt Peak National Observatory, using the echelle spectrograph with the UV Fast camera. The resulting Li abundances for these stars range between N(Li) values of 1.99 and 2.24, where N(Li) = 12 + log (Li/H). These results agree with the abundances reported previously for five other metal-poor dwarfs with the Fe/H ratios not above -2.60. The invariance of Li abundance in these 11 stars indicates a primordial origin for most of the Li observed in these Galactic stars.
Hobbs et al. (Mon,) studied this question.